KR20030072556A - Air conditioner - Google Patents

Abstract

The indoor unit Z ₁ includes a casing 1 that is embedded or suspended in the ceiling 50, and an indoor panel 2 that is installed below the casing 1 and exposed to the room. The indoor panel 2 is provided with a suction port 3 and a plurality of discharge ports 4 which surround the suction port 3 in a rectangle and each have a rectangular shape. An infrared sensor 15 is provided on the exposed side of the indoor panel 2. The indoor unit Z ₁ also controls the air flow changing device 52 based on the air flow changing device 52 for changing the characteristics of the air flow discharged from each discharge port 4 and the output information of the infrared sensor 15. The control apparatus 53 is provided.

Description

Air Conditioner {AIR CONDITIONER}

Conventionally, when performing air conditioning in a building having a relatively large air conditioning space such as a store, a restaurant, or an office, it is common to arrange a ceiling-mounted or ceiling suspended indoor unit on the ceiling side of the air conditioning space.

However, when air-conditioning of a large air-conditioning space is performed with a ceiling-embedded or ceiling-suspended indoor unit, there are the following problems. That is, conventionally, the airflow is equally blown out from each discharge port of the indoor unit without considering air-conditioning conditions such as heat load distribution and distribution of people in the room. Therefore, there exists a case where the deviation of the comfort temperature accompanying a feeling of a draft exists in a room because a deviation of room temperature arises. In addition, an area without people may be co-operated in the same manner as an area with people, resulting in low power savings. In addition, although the heat load distribution was changed over time according to the conditions such as seasons, time zones, and the number of people indoors, driving was always performed under uniform conditions. As a result, there was a case where power saving was inferior due to uneconomic cooperation.

In order to improve such a conventional problem, the technique which detects the heat load distribution of a room, the distribution of a person, etc., for example, and adjusts the discharge airflow characteristic from the indoor unit discharge port based on this detection information is proposed. For example, a technique for appropriately controlling the discharge air volume, the discharge temperature, the discharge speed, the discharge direction, and the like, to perform air conditioning with excellent comfort and excellent power saving (for example, Japanese Patent Laid-Open No. 5-203244, Japan Japanese Patent Laid-Open No. 5-306829) has been proposed. As a means of detecting heat load distribution or the like, a technique using an infrared sensor (for example, see Japanese Patent Application Laid-Open No. 5-20659) and the like have been proposed.

However, although the conventional proposed technology was supposed to be able to achieve a function required in theory and to exert a predetermined action effect, the technical content is not concrete or practical, and thus has not yet reached a practical stage. Therefore, early establishment and specification of these technologies are strongly required.

The present invention relates to an air conditioner installed in a suspended state or suspended state on the ceiling.

BRIEF DESCRIPTION OF THE DRAWINGS The perspective view seen from the indoor side of the indoor unit which concerns on 1st Embodiment of this invention.

2 is an enlarged cross-sectional view of a main part of the indoor unit shown in FIG. 1;

3 is a cross-sectional view showing a first structural example of the air volume distribution mechanism provided in the indoor unit discharge port;

4 is a view from the arrow direction of the IV-IV line of FIG.

5 is a cross-sectional view showing a second structural example of the air volume distribution mechanism provided in the discharge port of the indoor unit;

6 is a cross-sectional view showing a third structural example of the air volume distribution mechanism provided in the discharge port of the indoor unit;

7 is an explanatory diagram of a first driving method of a second flap provided in an outlet of an indoor unit;

8 is an explanatory view of a second driving method of the second flap provided in the discharge port of the indoor unit;

9 is a perspective view of an indoor unit of the indoor unit according to a second embodiment of the present invention.

10 is an enlarged cross-sectional view of a main part of the indoor unit shown in FIG. 9;

The perspective view seen from the indoor side of the indoor unit which concerns on 3rd Embodiment of this invention.

12 is an enlarged cross-sectional view of a main part of the indoor unit shown in FIG. 11;

13 is a flowchart of a method of correcting a radiation temperature.

14 is a perspective view of an indoor unit of the indoor unit according to a fourth embodiment of the present invention.

15 is an enlarged cross-sectional view of a main part of the indoor unit shown in FIG. 14;

In order to achieve both comfort and power saving, the present invention is directed to an air conditioner including a detection device such as a heat load and an airflow change device for changing discharge airflow characteristics and a control device of the airflow change device. It aims to propose in a more specific and realistic form and to promote its practical use.

The first air conditioner includes a casing that is embedded or suspended on the ceiling, and is installed below the casing, the inlet and a plurality of outlets formed around the inlet in a quadrangle and each of which has a rectangular shape are exposed to the room. Controlling the air flow changing device based on an indoor panel, an infrared sensor configured at an exposed side of the indoor panel, an air flow changing device for changing characteristics of the air flow discharged from the respective discharge ports, and output information of the infrared sensor It is provided with a control apparatus.

In the second air conditioner, in the first air conditioner, the infrared sensor is disposed between the discharge ports.

In the third air conditioner, in the first air conditioner, the infrared sensor is disposed in the discharge port main edge portion.

A 4th air conditioner is equipped with the syringe port which scans the said infrared sensor in a said 1st air conditioner.

In the first air conditioner, a plurality of fifth air conditioners are disposed corresponding to each of the discharge ports, and each of the infrared sensors is a non-scanning infrared sensor each having a predetermined range as a detection target. .

The sixth air conditioner includes, in the first air conditioner, a plurality of temperature sensors or temperature and humidity sensors disposed in the vicinity of each discharge port, respectively, in the intake port inner portion of the indoor panel or the intake port inner portion of the casing. will be.

The seventh air conditioner, in the sixth air conditioner, calculates a heat load based on the syringe port for scanning the infrared sensor and output information of each temperature sensor or each temperature and humidity sensor, and whether the heat load is greater than or equal to a predetermined load. Is determined for each temperature sensor or each temperature and humidity sensor, and a stop device for stopping the operation of the syringe port when it is determined that the heat load is greater than or equal to the predetermined load by the temperature sensor or the temperature and humidity sensor with a predetermined ratio or more.

The eighth air conditioner, in the sixth air conditioner, estimates an object temperature in each discharge port air discharge direction based on output information of each temperature sensor or each temperature and humidity sensor, and based on the expected object temperature, the infrared sensor And a correction device for correcting the detected temperature of the sensor.

The ninth air conditioner is the sixth air conditioner, wherein the infrared sensor is configured to detect the human body position in the room, and the temperature sensor or the temperature and humidity sensor is configured to detect the intake air temperature from the room.

The tenth air conditioner includes, in the first air conditioner, the air flow change device configured to change the air flow rate distribution mechanism for changing the discharge air flow rate distribution ratio between the discharge ports, and the air flow direction in the long side direction of each discharge port. A first flap to be changed, a second flap for changing the discharge direction of the air flow in the short-side direction of each discharge port, the air volume distribution mechanism, the first flap, and the second flap for each discharge port; It is provided with the drive mechanism which drives each independently.

The eleventh air conditioner includes, in the first air conditioner, the air flow changing device configured to change the air flow rate distribution mechanism for changing the discharge air volume distribution ratio between the discharge ports, and the discharge direction of the air flow in the longitudinal direction of each discharge port. A first flap to be changed, a second flap for changing the discharge direction of the airflow in the short-side direction of each discharge port, a drive mechanism for driving the air volume distribution mechanism and the first flap independently for each of the discharge ports; And a driving mechanism for driving the second flaps of the discharge port in association with each other.

In the twelfth air conditioner, in the first air conditioner, discharge passages continuous to the respective discharge ports are arranged in the casing, and the airflow change device is disposed in each discharge passage to discharge between the discharge holes. A flow rate distribution mechanism for changing the distribution ratio of the air flow rate, a first flap disposed in each discharge passage to change the discharge direction of the airflow in the long side direction of each discharge passage, and each discharge outlet long side in each discharge passage And a drive mechanism disposed at one end in the direction to drive the respective air volume distribution mechanisms, and a drive mechanism disposed at the other end of the discharge port long side direction in the discharge flow paths to drive the first flaps.

In the thirteenth air conditioner, in the first air conditioner, discharge passages that are continuous to the respective discharge ports are disposed in the casing, and the airflow change device is disposed in the discharge passages to adjust the opening area of each discharge passage. And a flow rate distribution mechanism for changing the distribution ratio of the discharge air volume between the discharge ports by increasing and decreasing the air flow rate distribution mechanism, wherein the air volume distribution mechanisms are respectively disposed in both of the short side directions of the discharge ports in the discharge flow path, and are directed to the upstream direction of the discharge flow path. A pair of shutters freely tilted with movement and the shutter is moved to both ends of the discharge flow path when the discharge flow path opening area is enlarged, and the shutter is reduced when the discharge flow path opening area is reduced. Is provided with a drive mechanism for moving the upstream side of the discharge flow path.

Therefore, according to the first air conditioner, the infrared sensor is disposed on the indoor exposed portion of the indoor panel, so that the field of view of the infrared sensor is sufficiently secured and the object temperature is detected with high precision. As a result, the control accuracy of the airflow changing device based on this detection information is improved, and further, the comfort and power saving of air conditioning are promoted. In the maintenance work of the infrared sensor, for example, unlike the case where the infrared sensor is disposed inside the suction grill (that is, the part not exposed to the room), the suction grill is not detached. Therefore, inspection or detachment work of the infrared sensor can be simplified and high water retention is realized.

According to the second air conditioner, the following effects can be obtained. That is, in the air conditioner, the infrared sensor is disposed between the discharge ports of the indoor panel, so that the infrared sensor is not directly exposed to the intake air stream from the intake port or the discharge air stream from the discharge port. As a result, for example, a problem when the infrared sensor is disposed on the intake side, that is, dust in the intake air stream, etc. adheres to the infrared sensor, which impairs the detection performance of the infrared sensor. It is possible to avoid the problem of the arrangement, that is, the infrared sensor is exposed to cold discharge airflow during the cooling operation, so that dew condensation occurs on the surface thereof and the detection performance is impaired. Therefore, a high level of detection performance is maintained for a long time.

According to the third air conditioner, the following effects are also obtained. That is, in this air conditioner, since the said infrared sensor is arrange | positioned in the main edge part of the discharge port of the said indoor panel, the temperature of the target object which exists in the discharge direction of airflow can be detected with high precision. For example, when arranging this infrared sensor, the said infrared sensor may be arrange | positioned at each said discharge port side, and the detection object direction of this infrared sensor may correspond to the discharge direction of the discharge port in which it is arrange | positioned. As a result, the correspondence relationship between the detection information of each infrared sensor and the indoor detection target area becomes clear, and thus the control of the airflow changing device based on the detection information of each infrared sensor becomes easy.

According to the fourth air conditioner, the following effects are also obtained. That is, this air conditioner is provided with the syringe hole which scans the said infrared sensor, for example, can enlarge the scanning range of the said infrared sensor by drive control of the said syringe hole. Therefore, by expanding the detection target range, the number of installation of the infrared sensor can be reduced, and it is also possible to use one infrared sensor. As a result, the lower the number of installation of the infrared sensor, the lower the price of the air conditioner is promoted, the detection information processing of the infrared sensor is facilitated, and the control can be simplified.

In addition, the infrared sensor can detect the temperature distribution in the room and the distribution of the person with higher accuracy by controlling the syringe opening, and further, better improvement in air conditioning comfort and power saving can be expected.

According to the fifth air conditioner, the following effects are also obtained. That is, in this air conditioner, a plurality of infrared sensors are disposed corresponding to each of the discharge ports. Therefore, by using a plurality of infrared sensors, it is possible to simultaneously and always detect the temperature distribution and the distribution of people throughout the room. As a result, the control of the airflow changing device based on these detection information becomes more accurate, and further improvement of comfort and power saving of air conditioning can be expected.

According to the sixth air conditioner, the following effects are also obtained. That is, in this air conditioner, since a temperature sensor or a temperature and humidity sensor is disposed on the inlet side to correspond to each of the outlets, the intake airflow temperature, that is, the indoor heat load, is directly detected by the temperature sensor or the temperature and humidity sensor. It can be reflected in the control of the airflow change device together with the detection information. Compared to the case where the air flow change device is controlled based only on the detection information of the infrared sensor, the air flow change device can be controlled with higher accuracy.

According to the seventh air conditioner, the following effects are also obtained. That is, in this air conditioner, when it is judged that the heat load is large in the direction more than predetermined ratio among the detection directions of each said temperature sensor or a temperature-humidity sensor, ie, the heat load is high in the area near the whole room, and the temperature distribution by the said infrared sensor When it is determined that there is little need for back detection, the operation of the syringe port is stopped. Therefore, as compared with the case where the syringe port is continuously operated during the operation of the air conditioner, the wear rate of the driving part is suppressed as the operation time thereof is reduced, and the durability thereof is improved. Therefore, it can contribute to reducing the operating cost of the air conditioner.

According to the eighth air conditioner, the following effects are also obtained. That is, the air conditioner estimates the average object temperature in each of the temperature sensor or the temperature and humidity sensor detection directions from the detection information of each temperature sensor or the temperature and humidity sensor, and corrects the detected temperature of the infrared sensor based on the object temperature. . For example, when the object temperature detected by the infrared sensor shows an unusual value with respect to the average object temperature expected from the detection information of the temperature sensor or the temperature / humidity sensor (for example, an indoor wall, a floor, or a human body that is originally intended to be detected). When the radiant heat from the metal surface of the low radiation portion or the heater or the window glass surface of the high radiation portion is detected instead of the radiant heat from the surface, the detection object of the infrared sensor is corrected by correcting the detection temperature based on the average object temperature. The detection error due to the difference from what was originally supposed is eliminated as much as possible, and the control precision of the said airflow change device can be ensured. As a result, comfort and power saving of air conditioning are further improved.

According to the ninth air conditioner, the following effects are also obtained. That is, the air conditioner detects the position of the human body in the room by the infrared sensor, and detects the intake air temperature from the room by the temperature sensor or the temperature / humidity sensor. Therefore, the infrared sensor only needs to detect the position of the person. For example, compared with the case where both the position detection of a person and the detection of room temperature distribution are performed, the detection information processing of this infrared sensor becomes easy. Therefore, the control system can be simplified. In addition, with respect to the indoor temperature distribution detection, it is possible to secure the precision required by the temperature sensor or the temperature and humidity sensor which is cheaper than the infrared sensor. As a synergistic effect thereof, both the accuracy of the detection information can be secured and the price can be reduced.

According to the tenth air conditioner, the following effects are also obtained. That is, in this air conditioner, the characteristics of the discharge airflow can be finely controlled for each discharge port, so that the air conditioning comfort and power saving can be further improved.

According to the eleventh air conditioner, the following effects are also obtained. That is, in the air conditioner, the characteristics of the discharge airflow can be finely controlled by the air volume distribution mechanism and the first flap for each discharge port. For example, the air volume distribution mechanism and the first flap are interlocked with each other. Compared with the structure to operate, the comfort of air conditioning and the power saving can be improved. Further, since each second flap disposed in each of the discharge ports can be driven by a single drive source, for example, the cost can be reduced and structure simplified as the number of installation of these drive sources is reduced as compared with the case where each of these second flaps is driven by an individual drive source. We can plan. Therefore, both the comfort and power saving of the air conditioner can be improved, and the air conditioner can be promoted at the same time.

According to the twelfth air conditioner, the following effects are also obtained. That is, in this air conditioner, the air volume distribution mechanism, the first flap, and these driving mechanisms can be arranged in a small size in the discharge passage portion that is spatially restricted. As a result, the thickness and size of the indoor panel can be reduced.

According to the thirteenth air conditioner, the following effects are also obtained. That is, in this air conditioner, when the opening area of the discharge flow path is enlarged, that is, when the discharge air flow rate is increased, the shutter is positioned at a portion where the flow velocity of the discharge flow path is slow, thereby reducing the ventilation resistance by the shutter, thereby ensuring the air flow rate. Is sure. In addition, the blowing sound can be reduced. On the other hand, when the opening area reduction operation of the discharge flow path, that is, when the discharge air flow rate is reduced, the shutter is located upstream of the discharge flow path, whereby the air flow fluctuation of the discharge port portion located at the downstream end of the discharge flow path is suppressed as much as possible. Therefore, condensation near the discharge port is prevented, and contamination of the ceiling surface due to the varied discharge airflow collision is prevented.

EMBODIMENT OF THE INVENTION Hereinafter, embodiment of this invention is described based on drawing.

(First embodiment)

1 and 2 show the indoor unit Z ₁ of the separate type air conditioner according to the first embodiment of the present invention. This indoor unit Z ₁ is a ceiling-embedded indoor unit that is embedded in the indoor ceiling 50. The indoor unit Z ₁ has a rectangular box-shaped casing 1 disposed above the ceiling 50, and a rectangular flat-shaped indoor panel 2 mounted from an indoor side to a lower opening of the casing 1. It is provided. In the indoor panel 2, a rectangular inlet 3 is arranged at the center thereof, and at the outside of the inlet 3, four discharge ports 4, 4, ...) is placed. Each discharge port 4 is a rectangular opening and extends substantially in parallel with the circumference of the indoor panel 2.

In the casing 1, a centrifugal fan 6 is disposed coaxially with the suction line 3 centerline, and a heat exchanger 5 surrounds the outer peripheral side of the blade 6. ) Is placed. In addition, a bell mouse 7 is disposed on the suction side of the wing 6, and a filter 9 and a suction grill 8 are mounted on the suction port 3, respectively.

On the other hand, a discharge flow passage 14 having a rectangular cross section extending upwardly in succession to the discharge port 4 is disposed on the upstream side of the discharge port 4. In the discharge flow path 14, the air volume distribution mechanism 10, the 1st flap 12, and the 2nd flap 13 mentioned later are arrange | positioned. And the "air flow change device 52" of this invention is comprised by the said air volume distribution mechanism 10, the 1st flap 12, and the 2nd flap 13. As shown in FIG.

In addition, an infrared sensor 15 as the temperature detection device 51 is disposed at one corner of the surface side of the indoor panel 2 (that is, the indoor exposure side). In addition, in the vicinity of the discharge passage 14 in the casing 1, the detection information from the infrared sensor 15 is received, such as the air volume distribution mechanism 10, the first flap 12, the second flap 13, and the like. The control unit 18 (corresponding to the "control device 53" of the present invention) for performing control is disposed.

Hereinafter, the configuration and the like of each of these components will be described in detail.

The air volume distribution mechanism 10 is for adjusting the air volume distribution ratio between the discharge ports 4, 4, ... by increasing or decreasing the amount of air discharged from the discharge port 4. 2 to 4, the airflow volume distribution mechanism 10 includes a pair of distribution shutters 11 and 11, respectively, disposed toward both sidewalls of the long side of the discharge flow passage 14. As shown in FIG. The specific structure of these distribution shutters 11 and 11 is as showing in FIG. That is, the distribution shutters 11 and 11 engage one end thereof with the guide groove 25 extending in the vertical direction along the sidewall of the discharge passage 14, thereby vertically moving along the guide groove 25. Free to move On the other hand, the other ends of the distribution shutters 11 and 11 are connected to the ends of a pair of racks 27 and 27, as shown in Figs. These tooth bearings 27 and 27 are meshed with respect to the gear 28 which is rotationally driven by the motor 29 (corresponding to the "drive mechanism" of the present invention) from both radial directions thereof.

Therefore, when the gear 28 is selectively rotated in both the forward and reverse directions by the motor 29, the pair of tooth bearings 27 and 27 engaged with the gear 28 move in the opposite direction to each other. In response to the movement of the tooth bearings 27 and 27, the distribution shutters 11 and 11 respectively move in the vertical direction while changing their inclined movement angles. The opening area of the discharge flow passage 14 is increased or decreased by increasing or decreasing the extension amount of the distribution shutter 11 toward the center of the discharge flow passage 14.

That is, in the state where the opening area of the discharge flow passage 14 is enlarged (at the time of setting the large air volume) in the air flow rate distribution mechanism 10, both the distribution shutters 11 and 11 are in a position close to the upright position. It is in the state accommodated toward the side wall of 14, and the extension amount toward the center of the said discharge flow path 14 becomes small. On the other hand, in a state where the opening area of the discharge flow passage 14 is reduced (at the time of setting the excitation amount), the distribution shutters 11 and 11 are both in a horizontal position, and extend toward the center of the discharge flow passage 14. The amount increases. And it is located in the upstream of the discharge flow path 14 as a whole.

In addition, the air volume distribution mechanism 10 is disposed corresponding to each of the discharge ports 4, 4, ..., and each of the air volume distribution mechanisms 10, 10, ... is independently and individually. Controlled. In addition, the control of this air volume distribution mechanism 10 is performed based on the detection information from the infrared sensor 15 by the control part 18 arrange | positioned near the said discharge flow path 14.

As described above, the air volume distribution mechanism 10 moves the distribution shutter 11 which is inclined to one point positioned on the side wall of the discharge flow passage 14 while moving in the flow direction of the discharge flow passage 14. In addition, when the opening area is enlarged, the distribution shutter 11 is positioned on the side wall of the discharge flow passage 14 so as to open the central portion of the flow passage having a high flow rate (in other words, the distribution shutter 11). On the other hand, when the opening area is reduced, the distribution shutter 11 is located upstream of the discharge flow passage 14 and has a structural and functional feature. As a result, the specific effects as described later are exhibited. That is, the air volume distribution mechanism 10 need not be limited to the same structure as in the above embodiment as long as it has the above-described structural and functional characteristics. Therefore, besides the above embodiment, for example, the structure shown in FIG. 5, the structure shown in FIG. 6, or the like can be appropriately employed. Briefly, these are as follows.

In the air volume distribution mechanism 10 shown in FIG. 5, the pair of distribution shutters 11 and 11 are freely moved forward and backward in the short side direction, respectively, at an upstream portion of the discharge flow passage 14. Also in the present air volume distribution mechanism 10, the configuration in which the distribution shutters 11 and 11 are driven by the motor 29 via the tooth support 27 and the gear 28 engaged therewith is illustrated in FIG. It is similar to the air volume distribution mechanism 10. Also in the airflow volume distribution mechanism 10 shown in FIG. 5, when the opening area is enlarged, all of the distribution shutters 11 and 11 are located on the side wall of the discharge flow passage 14, thereby greatly increasing the center of the high flow velocity flow path. On the other hand, when the opening area is reduced, all of the respective distribution shutters 11 are located upstream of the discharge passage 14.

The air volume distribution mechanism 10 shown in FIG. 6 is provided with one distribution shutter 11, and one end of this distribution shutter 11 is inclined to the upstream part of the side wall of the discharge flow path 14 one side. In addition to supporting the shaft freely, the dispensing shutter 11 is rotated by the motor 35 through the gear 33 and the gear 34 engaged with each other. The air volume distribution mechanism 10 can selectively take the opening area enlargement posture shown by the solid line in FIG. 6 and the opening area reduction posture shown by the dotted line. Also in the airflow volume distribution mechanism 10 shown in FIG. 6, when the opening area is enlarged, the distribution shutter 11 is positioned on the side wall of the discharge flow passage 14 so as to largely open the center of the fast flow passage. On the other hand, when the opening area is reduced, the respective distribution shutters 11 are located upstream of the discharge passage 14.

The first flap 12 changes the discharge direction of the transverse direction (in other words, the long side direction of the discharge port 4) of the discharge air stream blown from the discharge port 4 toward the interior through the discharge flow passage 14. It is to adjust. As shown in FIG. 2, the 1st flap 12 is comprised from the plate body which has the external shape of the formula following the cross-sectional shape of the flow path from the said discharge flow path 14 to the said discharge port 4, and is attached to the support shaft 23. As shown in FIG. As a result, oscillation is freely supported with respect to the long side wall of the discharge passage 14. As shown in FIG. 4, a plurality of first flaps 12 are disposed in the discharge flow passage 14 at predetermined intervals in the long side direction thereof. The 1st flap 1 is connected to the motor 30 (corresponding to the "drive mechanism" of this invention) via the connecting rod 24 which mutually connects them, and is driven by this motor 30 in the oscillation direction, The inclination angle is changed. By changing this inclination angle, the discharge direction in the horizontal direction of the discharge airflow from the discharge port 4 is changed and adjusted. In addition, although each said 1st flap 12, 12, ... is arrange | positioned in each said discharge port 4, 4, ..., these control is performed independently and separately by the said control part 18, respectively. do.

In addition, although each said 1st flap 12,12, ... is arrange | positioned in the discharge flow path 14, the said motor 30 is arrange | positioned at the short side edge part of the discharge flow path 14, and this motor It is comprised so that the passage area of the said discharge flow path 14 may not become narrow by arrangement | positioning of 30. As shown in FIG.

As shown in FIG. 2, the second flap 13 is formed of a band plate body having a curved cross-sectional shape. The 2nd flap 13 is a downstream part of the said discharge flow path 14, and is arrange | positioned in the site | part adjacent to the said discharge port 4. As shown in FIG. Then, the second flap 13 is inclined about its upper circumference so that the discharge direction in the longitudinal direction (in other words, the short side direction of the discharge port 4) of the discharge airflow is changed and adjusted.

The second flap 13 is arranged in each of the discharge ports 4, 4, ..., but the driving method of each of the second flaps 13, 13, ... is a linkage method and an individual method. I can think of it. As shown in FIG. 7, the interlocking members 32 and 32 are formed by interlocking the second flaps 13, 13,... Which are disposed corresponding to the respective discharge ports 4, 4,... , ...), and each of these second flaps 13, 13, ... is driven by a single motor 31. On the other hand, as shown in FIG. 8, the individual system is a motor dedicated to each of the second flaps 13, 13, ... arranged corresponding to each of the discharge ports 4, 4, ..., respectively. (31, 31, ...) to drive separately. Of these two methods, the former linkage method has the advantage that the drive unit structure is simple in that it can be driven by a single motor 31, and the cost can be reduced. On the other hand, in the latter individual method, there is an advantage that the discharge direction in the longitudinal direction of the discharge air stream can be individually and finely adjusted for each discharge port 4, 4,...

The infrared sensor 15 detects the temperature (object temperature) on the basis of radiant heat from a detection object such as an indoor wall, a floor, or a human body in the state where the indoor unit Z ₁ is installed on the ceiling 50 side, This is output to the controller 18 as detection information regarding the current room temperature. As shown in FIG. 1 and FIG. 2, the infrared sensor 15 is arrange | positioned at one of four corner parts of the outer peripheral side of the said indoor panel 2, ie, the area | region between four opening parts of the said discharge ports 4 and 4. As shown in FIG. In this embodiment, the infrared sensor 15 is provided via the syringe hole 20, and the single infrared sensor 15 detects the object temperature of the entire indoor area. Moreover, the said syringe port 20 is comprised so that the said infrared sensor 15 may be rotated by the 2nd motor 22 which has a vertical axis, reciprocating by the 1st motor 21 which has a horizontal axis. This infrared sensor 15 is supported by the casing 1 side in the state inserted in the sensor installation hole 19 arrange | positioned at the said indoor panel 2.

The infrared sensor 15 may be, for example, a single-element sensor that integrally detects the entire area of the detection target range, or a one-dimensional array element sensor that detects each division by dividing the detection target range in one direction. A two-dimensional array element sensor or the like that detects each divided area by dividing the detection target range in two orthogonal directions is suitable.

In addition, detection information regarding the object temperature detected by the infrared sensor 15 is input to the control unit 18 and used as a control element of the air flow changing device 52 by the control unit 18.

As described above, the controller 18 controls the air volume distribution mechanism 10, the first flap 12, and the second flap 13 based on the detection information detected by the infrared sensor 15. Run them as they are related. In addition, the control unit 18 optimizes air conditioning by simultaneously performing air conditioning capability and temperature control in addition to the corresponding control, thereby improving comfort or power saving of air conditioning. For example, the characteristics of the discharge air streams blown out from each of the discharge ports 4, 4, ... of the indoor unit Z ₁ are always set equally between the discharge ports 4, 4, ... Rather, it adjusts in response to room temperature distribution (heat load distribution) or human distribution. For example, at the time of cooling, air volume control is performed to increase the discharge air volume in a region having a high temperature or a large number of people, while reducing the discharge air volume in a region having a low temperature or a region without a human. In addition, the direction of the discharge airflow is controlled in a region where a person is present, thereby avoiding direct impact of the discharge airflow on the person, thereby performing wind direction control or the like for reducing the draft feeling.

Here, the operation and effect of the indoor unit Z ₁ will be described. The indoor unit Z ₁ of this embodiment has an object of realizing air conditioning optimization and improving its comfort or power saving as described above. In order to achieve this object, the air flow changing device by the controller 18 is achieved. It is important to ensure sufficient control accuracy for (52) and the like. Furthermore, it is important to increase the detection accuracy of the infrared sensor 15, which is the basis of the control of the control unit 18, and to ensure the reliability of the detection information. The indoor unit Z ₁ of this embodiment is embodying the technical idea based on this viewpoint to each indoor unit component. Therefore, in the indoor unit Z ₁ of this embodiment, each of the above components is based on its unique configuration and exhibits the desired functions, thereby improving comfort or power saving by the air conditioning optimization, which is the ultimate problem. This will be described in detail below.

In the indoor unit Z ₁ of this embodiment, the air-conditioning air after being heat-exchanged through the heat exchanger 5 is blown out from the respective discharge ports 4, 4,... At this time, when the discharge air flows through the portion of the discharge passage 14, the air volume is adjusted by the air volume distribution mechanism 10 for each of the discharge ports 4, 4,... That is, the distribution action of the discharge air volume between these discharge ports 4, 4, ... is achieved. In addition, the discharge direction adjustment action in the horizontal direction by the first flap 12 and the discharge direction adjustment action in the longitudinal direction by the second flap 13 are simultaneously executed. In addition, other controls such as air conditioning capacity control and temperature control are also executed simultaneously. As a synergistic effect, the air conditioning optimization is realized.

Here, the optimization of such air conditioning is in the not already the same as described above. Then, the embodiment of the indoor unit (Z ₁₎ is realized by a high-precision detection information from the infrared sensor 15 is input to the control unit 18 By employing the following configuration for the infrared sensor 15, high-precision detection information can be obtained.

First, in this embodiment, the infrared sensor 15 is disposed at the portion between the openings of the discharge ports 4, 4, ... in the indoor panel 2, that is, at the exposed portion to the room. By such a configuration, the field of view of the infrared sensor 15 is sufficiently secured, and as a result, detection of the object temperature by the infrared sensor 15 is achieved with high accuracy.

Second, in that the infrared sensor 15 is disposed at an area between the openings 4, 4,... Of the interior panel 2, the infrared sensor 15 is separated from the suction port 3. There is no direct exposure to the intake air stream or the discharge air stream from the discharge port 4. As a result, for example, as in the case where the infrared sensor 15 is disposed on the suction port 3 side, there is no problem that dust or the like in the intake air flow adheres to the infrared sensor 15 and the detection performance is impaired. In addition, as in the case where the infrared sensor 15 is disposed in the discharge port 4, the infrared sensor 15 is exposed to cold discharge airflow, causing condensation on the surface thereof, thereby deteriorating detection performance. This is reliably prevented. Therefore, a high level of detection performance is maintained over a long period of time.

Third, the infrared sensor 15 is configured to enable scanning detection by the syringe hole 20. By the control of the said syringe port 20, the infrared sensor 15 can detect the room temperature distribution and the distribution of a person more accurately. In addition, by detecting the temperature of the object by one infrared sensor 15, the detection information processing is easy and the reliability thereof is also improved.

As these synergistic effects, by introducing the accurate and reliable detection information by the infrared sensor 15 into the control unit 18, further improvement in comfort and power saving of air conditioning by the indoor unit Z ₁ is achieved. can do.

On the other hand, the characteristic configuration of the airflow change device 52 also improves the comfort and power saving of the air conditioning.

That is, firstly, in this embodiment, the air volume distribution mechanism 10, the first flap 12, and the second flap 13 are independent of each of the discharge ports 4, 4, ..., respectively. Since it can be configured to be operated as, the characteristics of the discharge air flow for each of the discharge ports (4, 4, ...) can be controlled in more detail by corresponding to the distribution of the room temperature or the distribution of people.

On the contrary, the air flow rate distribution mechanism 10 and the first flap 12 are configured to be independently operable to each of the discharge ports 4, 4,... 13 may be configured to operate in conjunction with each of the discharge ports 4, 4,... In this case, the discharge air flow characteristics can be finely controlled by the air volume distribution mechanism 10 and the first flap 12 for each of the discharge ports 4, 4,.

Secondly, in this embodiment, the air volume distribution mechanism 10 is constituted by a pair of distribution shutters 11 and 11, and each of the distribution shutters 11 and 11 is an enlargement operation of the opening area of the discharge passage 14. At the time of the discharge flow path 14, it is located in the long side of the discharge flow path 14, and at the time of the reduction operation | movement of this opening area, it is located in the upstream of the discharge flow path 14. As shown in FIG. In the enlargement operation of the opening area of the discharge flow path 14, that is, when the discharge air volume is increased, the distribution shutters 11 and 11 are located at a portion where the flow velocity of the discharge flow path 14 is slow. The ventilation resistance by 11) is reduced, ensuring the discharge air volume, and the blowing sound.

As these synergistic effects, the discharge airflow characteristics are improved, and the comfort and power saving of the air conditioning by the indoor unit Z ₁ can be improved.

There are also side effects as follows.

Firstly, in this embodiment, the air flow rate distribution mechanism 10 and the first flap 12 are respectively disposed in an upstream portion of the discharge flow passage 14 that follows the discharge port 4, and the discharge flow passage 14 The driving mechanism 29 of the air volume distribution mechanism 10 and the driving mechanism 30 of the first flap 12 are disposed at both ends of the long side direction. With such a configuration, the air volume distribution mechanism 10, the first flap 12, and the drive mechanisms 29 and 30 thereof can be arranged in a small portion in the discharge passage 14 which is spatially restricted. As a result, the interior panel 2 can be thinned and downsized.

Secondly, in this embodiment, the pair of distribution shutters 11 and 11 are placed on the upstream side of the discharge flow path 14 during the reduction operation of the opening area of the discharge flow path 14 (that is, when the discharge air volume decreases). Configure to locate. By such a configuration, a change in the air flow of the portion of the discharge port 4 located at the downstream end of the discharge flow path 14 is suppressed as much as possible, preventing condensation near the discharge port 4 and contaminating the ceiling due to the collision of the changed discharge air stream. Occurrence is prevented.

Third, in this embodiment, since the said infrared sensor 15 is arrange | positioned in the indoor exposure part of the said indoor panel 2, at the time of repair work of this infrared sensor 15, this infrared sensor 15 is replaced, for example. It does not require the removal of the suction grill, such as when placed inside the suction grill (ie, an area not exposed to the room). Therefore, inspection or desorption operation of the infrared sensor 15 can be performed easily, and high water retention is realized.

Fourth, in this embodiment, since each said 2nd flap 13 is comprised so that each said discharge port 4, 4, ... may mutually operate, each said 2nd flap 13, 13, ... It can be driven by a single drive source. As compared with the case where each of these second flaps 13, 13, ... is driven by an individual drive source, the number of drive source installations is reduced, so that the cost can be reduced and the structure can be simplified.

(2nd embodiment)

9 and 10 show the indoor unit Z ₂ of the separate type air conditioner according to the second embodiment of the present invention. This indoor unit Z ₂ has the same basic structure as the indoor unit Z ₁ according to the first embodiment. The only difference is the configuration of the infrared sensor 15. Therefore, below, only the structure of the said infrared sensor 15 peculiar to this embodiment, the effect by this, etc. are explained in full detail, and the description of other structure and effect is abbreviate | omitted. 9 and 10 are assigned the same reference numerals corresponding to the constituent members shown in FIGS. 1 and 2.

In the indoor unit Z ₂ of this embodiment, when the infrared sensor 15 is disposed on the indoor panel 2, the infrared sensor 15 is placed at each of the discharge ports 4, 4,... In the main edge part of the suction port 3 side, it arrange | positions three by the predetermined space | interval at the longitudinal direction of this discharge port 4, respectively. Each of these infrared sensors 15, 15, ... is directly fixed to the main edge portion. The range of detection targets of the infrared sensors 15, 15, ... arranged correspondingly to the respective discharge ports 4, 4, ... is fixed for each discharge direction of the corresponding discharge port 4, respectively. It is limited to a range. In addition, for each infrared sensor 15, 15, ... arranged three by the long side direction of the discharge port 4, the detection target range is limited to a predetermined range. Therefore, in this embodiment, each infrared sensor 15 is a non-scanning infrared sensor which respectively detects a fixed range.

That is, four corresponding to this embodiment, the interior space that is the detection target range, as shown in Figure 9, a flat field of view the indoor unit (Z ₂₎ the center of each discharge port with the in the (4, 4, ...) The virtual partition is divided into large areas A1 to A4. In addition, each of these large areas A1 to A4 is divided into three small areas SA, SB, and SC for each of the three infrared sensors 15, 15, ... that use the large area as the detection target range. Virtual compartment. The detection target range of each infrared ray 15 is one of these small areas SA, SB, and SC. With this setting, when detection information of each of the infrared sensors 15, 15, ... is inputted to the control unit 18, it is easy to identify which small area information of which large area is the detection information. Can be built.

Also in this embodiment, since each said infrared sensor 15, 15, ... is arrange | positioned on the surface of the said indoor panel 2, ie, an indoor exposed part, each said infrared sensor 15, 15, ... The field of view is sufficiently secured, and the detection of the object temperature is achieved with high precision. As a result, the control precision of the air flow change device 52 by the control unit 18 based on this detection information is improved, and furthermore, it is possible to improve comfort and power saving of air conditioning. In the maintenance work of each of the infrared sensors 15, 15, ..., for example, the infrared sensors 15, 15, ... are inside the suction grille (i.e., the part not exposed to the room). Since the suction grille is not required to be detached from the suction grille, the inspection or detachment of each of the infrared sensors 15, 15, ... can be simplified, and high water retention is achieved.

In addition, three infrared sensors 15, 15, ... are arranged for each of the discharge ports 4, 4, ..., and the detection target range of each of the infrared sensors 15, 15, ... is determined. By specifying each of the infrared sensors 15, 15, ..., the following effects are obtained.

That is, the correspondence relationship between the detection information of each infrared sensor 15, 15, ... and the indoor detection target area becomes clear, and the above-mentioned based on the detection information of each infrared sensor 15, 15, ... becomes clear. Operation control of the airflow change device 52, such as the airflow volume distribution mechanism 10, becomes easy.

In this embodiment, a plurality of the infrared sensors 15 are disposed corresponding to each of the discharge ports 4, 4, ..., and the detection target range is fixedly set. 15, 15, ...) can simultaneously and always detect the temperature distribution and the distribution of people throughout the room. As a result, operation control of the air volume distribution mechanism 10 or the like based on this detection information becomes more accurate, and further improvement of comfort and power saving of air conditioning is expected.

(Third embodiment)

11 and 12 show the indoor unit Z ₃ of the separate type air conditioner according to the third embodiment of the present invention. The indoor unit (Z ₃₎ is one in the first configuration with the base of the second indoor unit (Z ₂₎ of the embodiment, and adding the temperature-humidity sensor 16 which will be described later this arrangement. Therefore, below, only the structure peculiar to this embodiment, that is, the structure of the said temperature-humidity sensor 16 and the correlation of this temperature-humidity sensor 16 and the said infrared sensor 15 is explained in full detail, and the other structure and effect The description is omitted. 11 and 12 are assigned the same reference numerals corresponding to the constituent members shown in FIGS. 1 and 2 of the first embodiment, and FIGS. 9 and 10 of the second embodiment.

In the indoor unit Z ₃ of this embodiment, the intake port of each of the discharge ports 4, 4,... Of the indoor panel 2 corresponds to each of the discharge ports 4, 4,... 3) The said infrared sensor 15 is arrange | positioned at predetermined intervals in the long edge direction of this discharge port 4, respectively in the main edge part. In addition, in addition to the portions corresponding to the respective discharge ports 4, 4,... Of the outer peripheral portion of the suction port 3 at predetermined intervals in the long side direction of the discharge port 4 (specifically, The temperature-humidity sensor 16 (in another embodiment, you may arrange | position a temperature sensor instead of this temperature-humidity sensor 16) is arrange | positioned at the interval corresponding to the infrared sensors 15, 15, ..., respectively. Therefore, each of the infrared sensors 15, 15, ... and the temperature-humidity sensors 16, 16, ... corresponding to them respectively have the same detection target range (i.e., each of the large areas A1-A4). Each small area SA to SC).

The temperature-humidity sensor 16 detects the temperature-humidity of the intake airflow sucked into the suction port 3 from the region corresponding to each temperature-humidity sensor 16, and outputs it to the control unit 18 as detection information. And the detection information from this temperature-humidity sensor 16 is compared with the detection information of the infrared sensor 15 (that is, the information about the indoor object temperature) in the said control part 18, and this infrared sensor 15 is detected. It is used as a reference for correction of information.

That is, the infrared sensor 15 originally detects the radiation temperature of an object such as an indoor wall surface, a floor surface or a person as the object temperature, and the detection information of the infrared sensor 15 is changed by the control unit 18 to change the air flow. The air flow rate distribution mechanism 10 of the apparatus 52 is used as a control reference. However, even indoors, for example, the window glass portion and the heater portion are higher radiation portions than the other portions, and the metal surface or the like is a low radiation portion. Therefore, simply by detecting the temperature of the object by the infrared sensor 15, if a high radiation portion or a low radiation portion is present in the detection target range, the temperature of an unusual value away from the heat load distribution in the room or the like is detected. do. Therefore, if the control unit 18 is used as a control standard as it is, for example, the amount of air more than necessary for a specific part of the room is discharged, and this part becomes "overcooling" or "lack of cooling" state, and the comfort is extremely There is a risk of being inhibited.

On the other hand, it is known empirically that the suction temperature of indoor air and the radiation temperature of the suction source region are usually close. For example, when the suction temperature is 25 ° C, the radiation temperature is about 23 ° C to 27 ° C. Therefore, the radiation temperature of the object can be estimated based on the intake temperature of the air.

Therefore, when the object temperature (copy temperature) detected by the infrared sensor 15 exhibits an unusual value that is significantly different from the radiation temperature expected from the suction temperature, the detection temperature of the infrared sensor 15 is based on the expected radiation temperature. Calibrate

Correction of the detection temperature can be performed using various methods. For example, simply, the area average radiation temperature (detection temperature after correction) T _S is the expected radiation temperature T _P (the expected radiation temperature T _P is equal to the normal suction temperature. T _P = = suction temperature) can be realized by adding a predetermined temperature offset T _OFS . In other words,

T _S = T _P + T _OFS

As a result, the detection temperature can be corrected.

As another correction method, there is also a method of correcting the radiation temperature by using the threshold temperature T _th described later. This correction method is particularly effective when the detection temperature and suction temperature of the infrared sensor 15 are greatly different from each other. For example, as shown in Fig. 13, after performing the detection of the radiation temperature by the infrared sensor 15, the calculation of the average radiation temperature for each zone, and the measurement of the suction temperature for each zone, in steps S1, S2 and S3, In step S4, it is determined whether or not the absolute value of the temperature difference between the average radiation temperature and the suction temperature is larger than the predetermined value ΔT ₁ , and if large, the following correction is executed.

By the way, the window etc. are surface parts with a lot of heat inflow and outflow with the outside. When such a surface portion is included in the field of view of the infrared sensor 15, or when the detection temperature of the infrared sensor 15 is further away from the suction temperature, the air temperature near the surface portion is the suction temperature and the detection temperature. It is thought to be temperature in between. Thus, after initial setting a predetermined threshold in step S5, when the absolute value of the difference between the suction temperature and the detection temperature is larger than the threshold value T _th , the average temperature distribution and the difference between the threshold value and the detection temperature are determined. The temperature difference multiplied by the coefficient η (coefficient η = about 0.3 to 0.7, which can be obtained empirically or experimentally) in consideration of the radiation temperature sense is given as an offset (see step S6). In other words,

T _OFS = η (T _th -T _S )

Shall be. Then, the average radiation temperature is calculated again from the radiation temperature T _S 'after the correction thus obtained (see step S7). Next, it is determined whether or not the absolute value of the difference between the average radiation temperature and the suction temperature is smaller than the predetermined value? (See step S8), and if it is small, the correction is terminated, while if it is not small, the threshold is reached in step S9. After updating the value, steps S6 to S8 are repeated.

In addition, what is necessary is just to provide the initial value of a threshold value suitably in step S5. Regarding steps S6 to S9, the processing may be repeated while updating the threshold value by a two-minute method or the like until the difference between the average radiation temperature and the suction temperature becomes sufficiently small.

Radiation temperatures of low-emissivity surfaces, such as metals, fluctuate throughout the day, and this type of radiation temperature deviation is a normal deviation to the low temperature side. This kind of radiation temperature is actually considered to represent the average temperature. In this case, therefore, the corrected copy temperature can be obtained by substituting the radiant temperature area temperature below the threshold T _th with the suction temperature and repeating the threshold value from the initial value in the same manner as described above.

In the optical measuring method, a deviation (drift) of the detection value occurs due to contamination of the sensor or the like while the sensor is used for a long time. However, from the viewpoint of performing stable control over a long period of time, it is desirable to compensate for long-term drift due to contamination or the like. Therefore, in a situation where it is determined that the difference between the radiation temperatures is small and the influence of the unusual radiation area is small, the detection value of the infrared sensor may be corrected with a slight difference between the suction temperature and the average radiation temperature. For example, the absolute value of the difference between the average radiation temperature and the suction temperature is smaller than the predetermined value (ΔT ₂ ) (see step S10), and the absolute value of the difference between the average radiation temperature and each radiation temperature is smaller than the predetermined value (ΔT ₃ ). In the case (see step S11), T _OFS = suction temperature-average copy temperature may be used (step S12).

In the state where the error of the detection temperature due to the presence of the unusual copy unit is corrected, this is used as a control criterion of the air flow changing device 52 of the control unit 18.

Further, the control unit 18 executes the prediction of the object radiation temperature and the correction of the detection temperature. Therefore, the "correction apparatus" of this invention is comprised by the control part 18. As shown in FIG.

As described above, in the indoor unit Z ₃ of this embodiment, when the detection information of the infrared sensor 15 is unusual, it is corrected by the expected radiation temperature based on the suction temperature detected by the temperature-humidity sensor 16. And correct the error with the actual value. As a result, proper airflow control is performed for the air flow change device 52 corresponding to the actual heat load distribution in the room, and as a result, the comfort or power saving of the air conditioning by the indoor unit Z ₃ is improved.

In addition, in the indoor unit Z ₃ of this embodiment, the infrared sensor 15 is fixed so as not to have a scanning function, and a plurality of these are arranged in correspondence with each of the discharge ports 4, 4,... do. However, in another embodiment, for example, the infrared sensor 15 may be configured in a single arrangement or a plurality of arrangements, and all of them may be configured to have a scanning function by the syringe port 20.

In particular, when the temperature and humidity sensors 16, 16, ... are combined with one having such an arrangement of the infrared sensor 15, the detection information of the temperature and humidity sensors 16, 16, ... By preventing the unnecessary operation of the syringe hole 20 on the basis of the above, the durability of the syringe hole 20 can be improved and the power saving of the indoor unit Z ₃ can be improved. That is, since each said temperature-humidity sensor 16, 16, ... makes a specific area | region a detection target range, respectively, as mentioned above, for example, all the said temperature-humidity sensors 16, 16, ... When most (for example, a temperature-humidity sensor with a predetermined ratio or more) detect that the radiation temperature of the object is high, that is, when the heat load is detected over the predetermined load in the entire area or most of the area, the infrared sensor ( The necessity of detecting the indoor object temperature by injecting 15) is slim. In this case, therefore, the operation of the scanning mechanism 20 is stopped. By stopping the operation of the syringe hole 20 in this way, for example, as compared with the case of continuously operating the syringe hole 20 during the operation of the air conditioner, the syringe hole 20 is reduced by the operation time Wear of the driving portion is suppressed. Therefore, the durability of the syringe opening 20 can be improved, and further contribute to the reduction of operating cost of the air conditioner.

In addition, the control part 18 performs determination of whether the heat load is more than predetermined load in the whole room or most area | regions. The stop control of the syringe hole 20 is also executed by the control unit 18. Therefore, the "judging device" and "stopping device" of the present invention comprise the control unit 18.

In addition, in this embodiment, although the said temperature-humidity sensor 16 is provided in the outer peripheral part of the said suction port 3 and in the said suction grill 8 of an upstream side than the said filter 9, in another embodiment, For example, as shown by 16 'of FIG. 12, it can also be provided in the said bell mouse 7 part.

(4th Embodiment)

14 and 15 show an indoor unit Z ₄ of the separate type air conditioner according to the fourth embodiment of the present invention. The indoor unit (Z ₄₎ is, in the basic configuration of the indoor unit (Z ₁₎ according to the first embodiment, and by applying the third embodiment of the temperature-humidity sensor 16 arrangement to this. Therefore, hereinafter, only the configuration specific to this embodiment, that is, the configuration of the temperature and humidity sensor 16 and the correlation between the temperature and humidity sensor 16 and the infrared sensor 15 will be described in detail. The description is omitted. 14 and 15 are given the same reference numerals corresponding to the constituent members shown in FIGS. 1 and 2 of the first embodiment and FIGS. 11 and 12 of the third embodiment.

In the indoor unit Z ₄ of this embodiment, the infrared sensor is interposed between the openings of the two discharge ports 4 and 4 adjacent to each other at a corner of the indoor panel 2 via the syringe port 20. (15) is placed. On the other hand, the suction port 3 side of the indoor panel 2 corresponds to each of the discharge ports 4, 4, ..., and in the long side direction of the discharge ports 4, 4, ... Three temperature and humidity sensors 16 are arranged at predetermined intervals, respectively.

The difference between the indoor unit Z ₄ of this embodiment and the first embodiment and the third embodiment is that the detection object of the infrared sensor 15 and the temperature and humidity sensor 16 is completely independent. That is, in the first embodiment, the infrared sensor 15 detects both the position of the indoor person and the room temperature distribution. In the third embodiment, the temperature-humidity sensor 16 is used to correct the detection value of the infrared sensor 15. In contrast, in this embodiment, the infrared sensor 15 is used only for detecting the position of an indoor person, and the temperature-humidity sensor 16 is used only for detecting the indoor temperature distribution. This embodiment isolate | separates the control relationship of this infrared sensor 15 and the temperature-humidity sensor 16. As shown in FIG.

According to this structure, the infrared sensor 15 only needs to detect the position of a person, and thus, for example, compared with the case where both the position detection and the detection of the indoor temperature distribution are performed, the detection information processing of the infrared sensor 15 is performed. It becomes easy, and the control system can be simplified by that much. At the same time, the detection of room temperature distribution can secure the required precision by the temperature-humidity sensor 16, which is cheaper than the infrared sensor 15, and as a synergistic effect, both the accuracy of detection information and the reduction in price can be achieved. Can be planned.

As mentioned above, this invention is useful for the indoor unit of a room air conditioner, a package air conditioner, etc.

Claims (13)

A casing (1) to be embedded or suspended in the ceiling (50), It is installed below the casing (1), and surrounds the suction port (3) and the suction port (3) in a quadrangle, and a plurality of discharge ports (4) each having a rectangular shape is formed and installed in a state exposed to the room Interior panel (2), An infrared sensor 15 disposed at an exposed side of the indoor panel 2, An air flow changing device 52 for changing the characteristics of the air flow discharged from the respective discharge ports 4; And a control device (53) for controlling the air flow changing device (52) based on the output information of the infrared sensor (15). The method of claim 1, The infrared sensor (15) is characterized in that arranged between the discharge port (4, 4). The method of claim 1, The infrared sensor (15) is an air conditioner, characterized in that arranged in the main edge portion of the discharge port (4). The method of claim 1, An air conditioner, characterized in that it comprises a syringe port (20) for injecting the infrared sensor (15). The method of claim 1, The infrared sensor 15 is arranged in plural in correspondence with the respective discharge ports 4, 4, ..., Each of the infrared sensors 15 is an air conditioner, characterized in that each non-scanning infrared sensor having a predetermined range. The method of claim 1, A plurality of temperature sensors or temperature and humidity sensors 16 disposed in the vicinity of each discharge port 4 at the inside of the suction port 3 of the indoor panel 2 or the inside of the suction port 3 in the casing 1. Air conditioner comprising a). The method of claim 6, A syringe port 20 for injecting the infrared sensor 15, A determination device 18 for calculating a heat load based on the output information of each temperature sensor or each temperature and humidity sensor 16, and determining whether the heat load is greater than or equal to a predetermined load for each temperature sensor or each temperature and humidity sensor 16; , And a stopper (18) for stopping the operation of said syringe port (20) when it is determined that the heat load is equal to or greater than the predetermined load by the temperature sensor or the temperature and humidity sensor (16) having a predetermined ratio or more. The method of claim 6, Based on the output information of each temperature sensor or each temperature / humidity sensor 16, the target temperature in each air outlet 4 airflow discharge direction is estimated, and the detection temperature of the infrared sensor 15 is corrected based on the expected target temperature. An air conditioner, characterized in that it comprises a correction device (18). The method of claim 6, The infrared sensor (15) detects the human body position in the room, and the temperature sensor or the temperature and humidity sensor (16) is configured to detect the intake air temperature from the room. The method of claim 1, The air flow changing device 52, An air volume distribution mechanism 10 for changing the discharge air volume distribution ratio between the discharge ports 4, 4,. A first flap 12 for changing the discharge direction of the air flow in the longitudinal direction of each discharge port 4; A second flap 13 for changing the discharge direction of the air flow in the short side direction of each discharge port 4; And a drive mechanism (29, 30, 31) for driving the air volume distribution mechanism (10), the first flap (12) and the second flap (13) independently for each of the discharge ports (4). Air conditioner. The method of claim 1, The air flow changing device 52, An air volume distribution mechanism 10 for changing the discharge air volume distribution ratio between the discharge ports 4, 4,. A first flap 12 for changing the discharge direction of the air flow in the longitudinal direction of each discharge port 4; A second flap 13 for changing the discharge direction of the air flow in the short side direction of each discharge port 4; Drive mechanisms 29 and 30 for driving the air volume distribution mechanism 10 and the first flap 12 independently for each of the discharge ports 4; And a drive mechanism (31) for driving the second flaps (13, 13, ...) of the discharge ports (4, 4, ...) in conjunction with each other. The method of claim 1, In the casing 1, discharge passages 14 continuous to the respective discharge ports 4 are provided. The air flow changing device 52, An air volume distribution mechanism 10 provided in each of the discharge flow passages 14 and changing a distribution ratio of the discharge air amounts between the discharge ports 4, 4,. A first flap 12 provided in each of the discharge flow passages 14 to change the discharge direction of the air flow in the longitudinal direction of each of the discharge ports 4; A drive mechanism 29 disposed at one end of each discharge port 4 in the longitudinal direction of each discharge port 14 to drive the respective air volume distribution mechanisms 10; An air conditioner provided in said discharge flow passage 14 and having a drive mechanism 30 disposed at the other end of said discharge port 4 in the long side direction and for driving said first flaps 12; . The method of claim 1, In the casing 1, discharge passages 14 continuous to the respective discharge ports 4 are disposed, The air flow changing device 52 is provided in each of the discharge flow passages 14, and by increasing or decreasing the opening area of each discharge flow passage 14, the distribution ratio of the discharge air volume between the discharge ports 4, 4, ... is increased. It is provided with the air volume distribution mechanism 10 to change, The air volume distribution mechanism 10, A pair of shutters 11 provided at both sides of the discharge port 4 in the short side direction of the discharge channel 14 and freely tilted with movement toward the upstream direction of the discharge channel 14. , 11), The shutters 11 and 11 are moved to both ends of the discharge flow path 14 during the enlargement operation of the opening area of the discharge flow path 14, and the shutter ( And a drive mechanism (29) for moving 11, 11 upstream of the discharge flow passage (14).